Question

Children of U.S Presidents. The data show the numner of children U.S Presidents had. Construct an ungrouped frequency distributiln and find the mean and modal class.

please help me construct an ungrouoed frequency distribution as seen above... also pelase help me find the mean and modal class.

Children of U.S. Presidents The data show the number of childre modal class. 0 7 0 5 5 6 5 0 4 1 3 4 10 2 6 7 4 4 3 3 6 3 8 8 2 1 6 03 UN 0 2 5 3 1 Send data to Excel Part: 0/3 Part 1 of 3 tian

Answer 1

Solution:

Construction of ungrouped frequency distribution.

Class(X)	frequency (f)	fx
0	5	0
1	3	3
2	4	8
3	6	18
4	4	16
5	4	20
6	4	24
7	2	14
8	2	16
9	0	0
10	1	10
Total	$\LARGE \sum f =35$	$\LARGE \sum f x=129$

We find mean of frequency distribution.

$\LARGE Mean = \bar x =\frac { \sum fx}{\sum f}$

$\LARGE Mean = \bar x =\frac { 129}{35}= 3.6857142$

$\LARGE Mean = \bar x= 3.6857$

Mode :The observation which occurs most frequently is known as mode .

Here maximum number of observations is 6

Modal class is 3

Mode = 3